My current therapist is okay with it, even though it's a bit outside his experience, to say the least. I did have one dreadful experience about twenty years ago with a therapist who was decidedly less liberal-minded. She considered my love of diapers to be a "sex addiction" and wanted me to join a sex-addiction therapy group. She felt I was an AB/DL because I was lonely and needed to get into a "normal heterosexual" relationship (she put particular stress on "heterosexual", though I don't know if I'd told her I was trans yet). As you might expect, I didn't go back.